Home / 721,459,963.94-995,318,793.03-438,975,953.11

Finding the Fourth Proportional to 721,459,963.94, 995,318,793.03 and 438,975,953.11

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Solution

The fourth proportional to 721,459,963.94, 995,318,793.03 and 438,975,953.11 is: 605,606,738.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,459,963.94 : 995,318,793.03 = 438,975,953.11 : x
  2. Step 2: Convert to fraction form
    721,459,963.94/995,318,793.03 = 438,975,953.11/x
  3. Step 3: Cross multiply
    721,459,963.94x = 995,318,793.03 × 438,975,953.11
  4. Step 4: Simplify right side
    721,459,963.94x = 436,921,015,821,543,680
  5. Step 5: Solve for x
    x = 436,921,015,821,543,680/721,459,963.94
  6. Step 6: Final answer
    x = 605,606,738.64

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.